.tree {
  // position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 80%;
  height: 500px;
  overflow-x: hidden; //横向隐藏
  overflow-y: auto; //触发滚动条
  background-color: #eee;
  .treeNodes {
    position: relative;
    overflow: hidden;
    .treeNode {
      .inner {
        color: #000;
        font-size: 20px;
        position: relative;
        cursor: pointer;
        padding-left: 10px;
        .collapse {
          position: absolute;
          left: 0;
          cursor: pointer;
        }
        .caret-right:before {
          content: "\25B8";
        }
        .caret-down:before {
          content: "\25BE";
        }
        .content {
          display: inline-block;
          width: 100%;
          padding: 4px 5px;
        }
      }
      .children {
        padding-left: 20px;
      }
    }
  }
}
